Derivatives

equilibrial

Cenozoic mammals of North America exhibited equilibrial diversity for approximately 55 Myr (Eocene-Pleistocene), with strong local interactions limiting diversity in local assemblages.

If mortality schedules subsequent to recruitment are strongly density-dependent, pulses of high recruitment will be followed by enhanced mortality and the standing population will remain at or close to an equilibrial size.

Some of the chapter authors refine these definitions somewhat to reflect current usage, for example, defining a regulated population in terms of a stationary probability distribution rather than an equilibrial density.